Double-lift open-shed dobby



(No Model.) 2 Sheets-Sheet 1.

W. W. UHLINGER. l DOUBLE LIFT OPEN SHED DO'BBY.

No. 458,680. Patented June 9, 1891.

WTNESSES:

ma cams :uns no.. waro-uwo, musulmans. n. c.

(No Model.) 2 sheets-sneer 2. W. W. UHLINGER. DOUBLE LIFT OPEN SHED DOBBY.

No. 453,680. 'PatentedJune 9, 1891.

WITNESSES:

UNITED STATES PATENT OFFICE.

WILLIAM W. UHLINGER, OF PHILADELPHIA, PENNSYLVANIA.

DOUBLE-LIFT OPEN-SHED DOBBY.

SPECIFICATION forming part of Letters Patent No. 453,680, dated June 9, 1891.

Application tiled .Tune Il, 1890. Serial No. 355,051. (No model.)

To @ZZ whom t may concern,.-

Be it known that I, WILLIAM W. UHLINGER, of. Philadelphia, county ot' Philadelphia, State of Pennsylvania, have invented a certain new and useful Improvement in Double-Litt Open- Shed Dobbies for Operating Harness-Shafts iu Looms, oi which the following is a true and accurate description, reference being had to the accompanying drawings, which i'orm a part oi this specification.

My invention relates to the construction ot' Jacquard looms, and particularly to that part and kind ot such machines known as doublelil't openfshed dobbies for operating the harness ot' the loom. Y

The object of my invention is to adapt such mechanism for use with a single-card cylinder, as well as with double-card cylinders, so that they can be used as a single-litt as well as a double-litt machine. Y

The nature of my improvements will be best understood, as described, in connection with the drawings, in which they are illustrated, and in whicli Figure 1 is a side elevation ot' a double-lift dobby provided with my improvements, and Figs. 2, 3, and I diagrammatic elevations showing the action oi' my improved device.

A is the frame of the dobby, which is fastened to the loom in the usual way.

B is a lever pivoted to a rod I), and to which is attached the connection B', which operates the harness. One of these levers is provided i'or each harness connection.

C is a link by whichv the lever B and pivoted lever D are connected together, as shown. To each end of the lever D bars E E' are connected, said bars being provided with shoulders e, Which limit their motion by coming in contact with the bars a a, extending from the frame. To the ends of the bars E E' are pivoted the hooks F F', the hooked ends f of which are adapted to engage the griff or knife edges M M'. These gritts are attached to the sliding` frames G G' l' to which are )ivotall I.

connected the links II II', which links are attached to the ends I I of a double bell-crank lever I2, by which Inotion is communicated to the griffs. On a bracket J, secured to the frame ot the machine, I pivot the bell-crank lever J', having the arms .73. The arm j of this lever is connected wit-h an arm of the lever D, when desired, by means of a wire link K, a projection (Z being formed on one arm oi' the lever D to support the end ot' the wire link K, as shown.

L L are the needles, the needle L bein connected with the hook F at Z and the needle L' with the hook F at l'. The needle L is also connected with the arm j ol the bell-crank lever .I as shown.

N and N' are the card-cylinders, which are operated in the usual way, receiving areciprocating motion through the connecting-rods P and P', which are actuated by the double bell-crank lever Q, which in turn receives motion through the connecting-rod R from the bell-crank lever S. The card-cylindcrs are guided by the stationary arm U and the pivoted arms V V, which press the cylinders against the arm U by the action ot' the spring r. The rotation of the card-cylinders is et'- Iected by the hook T.

For the most part the apparatus here shown is substantially the same in construction and operation as that illustrated in the patent to IV. P. Uhlinger, No. s032565, dated May 2l, 1889, and it need not therefore be further described, except with relation to the novel features whichI have introduced into it.

In the use of machines of this kind it will frequently be a matter of convenience for the manufacturer to be able to use the dobby as a single-lift machine and with a singlecard cylinder in operation. I am enabled to adapt the machine for such use by means of the connection of one ot' the needles with the bell-crank lever J' and with one arm of the lever D and a device for connecting the said lever-arm with the bell-crank lever. Thus in the plan shown in the drawings the needles L, which govern the position of the upper row of hooks F, are connected with the bell-crank levers J', this connection being` made when griff M is in its extreme outward position. It now it is desired to operate the machine as a single-lift machine, cards are placed in the cylinder N' only, and the wire link K is placed over the endj of the lever J and upon one arm of the lever D, as shown, the proj ection d being provided to support it in position on said arm. IVhenever the card in the cylinder N' raises the needle L and lifts a hook F' oit of the griff M', the lower end of ICO the lever D of course moves inward to its extreme position, and as the upper griff M moves back the upper end of the lever Dl also moves inward toward its extreme position, and toward the end of its said movement it presses against the end of the link K and causes the bell-crank J to turn, lifting the needle L and the hook F and disengaging the hook F with the griff M, so that as the griff M nieves out again it leaves the hook behind it and does not effect any movement in the levers D and -B during its outward movement. While the griii M moves out the griff M' is of course moving in, and will at the end of its inward movement engage the hook F', unless the card again raises the needle L', which regulates the engagement of the said hook. The result of this construction, as will be at once apparent, is to convert the machine substantially into a single-lift machine instead of a double-lift machine. When itis desired to again use the machine as a doublelift machine, it is only necessary to disconnect the link K, as indicated in Fig. 4.

The different positions of 'the machine represented in the drawings are sufficient to illustrate the mode of action of my improved device. Thus in Fig. l the hook F' is represented as engaged with the griff M and in its extreme outward position, while the hook F is engaged with the griff M and is represented in its eXtreme inward position. The same position of the parts is represented in the diagrammatic Fig. 2, and it will be seen .that in the position of the lever D, effected by this arrangement of the griifs and hooks, no stress is put upon the bell-crank lever J. In Fig. 3 the hook Fis represented as detached from the gri M and the griff M is in its inward position. The leverD therefore occupies its extreme inward position, the harness controlled by it being of course dropped. As there shown, the lever D, pressing against the end of the link K and by means of the bellcrank J' and. needle L, lifts the hook F out of engagement with the kgriff M, so that the har-7 ness remains dropped during the outward movement of the griff M and the inward movement of the griff M.

The advantage of the double-lift dobby is that the harness remains open or closed, as the case may be, until there is occasion to change its position, and also that the motion of the harness need be but half as fast as in an ordinary single-lift machine to effect the same results on the shed.

By my improvement I retain the advantageous feature of holding the harness and shed stationary until the time comes to change their position, and the required speed is secured when the machine is used as a single lift by a simple change of gears.

Having now described my invention, what I claim as new, and desire to protect by Letters Patent, is-

In a double lift dobby, the combination,

with the lever D, of the rods E E', connected with the ends of said lever, the hooks F F', pivoted on said rods, the griffs M M', the needles L L', connected, respectively, with hooks F and F', the card-cylinders N N' and means for actuating them, a bell-crank J', connected with one of the needles, and means, as link K, for connecting said bell-crank with an arm of lever D, all substantially as specified, and so that the apparatus can be fitted to operate with a single-card cylinder.

WILLIAM TW. UHLINGER.

lVitnesses:

GEORGE HOUSE, H. F. GRAYBILL. 

